External input in Rekordbox

I use a DJM750 MK2 at home with CDJ's, turntables (analog vinyl) and some external gear. I really want to use the Rekordbox effects and sampler with Vinyl or drummachines input. I would really love all the features of rekordbox but this would be a big step up in my workflow. It would be great to make this available if you hook op an external mixer. On location you will find 900NX2 or newer, so it would be nice if it worked with all pioneer clubmixers with a soundcard.
THANX in advance!